TPI 275 400A Digital TRMS AC Clamp-on MultiMeter features an 11,000 count display with True-RMS and measures up to 400 amps AC/DC, features auto/manual ranging, data hold, low battery indication, over range indicator (OL), peak hold, min/max, relative mode, high voltageindication (greater than 30V AC/DC), non contact voltage detection, auto shutoff after 30 minutes, separate compartment for battery, low Ohm Range (110 Ohm), Amps AC resolution, 0.01A, VDC/VAC resoultion, 0.01mV DCuA measurement (0.01uA reoltion) and measures temperature.